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Old 05-21-19, 09:42 AM
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GXP threaded bottom brackets don't use preload adjusters or wave washers. Those are only used on press fit bottom brackets. If you have a normal Force 1 crankset, the spindle should measure around 117mm from the inside of the drive side arm to the end of the spindle. If that is the case, you don't need any spacers. Just install the cups, slide the spindle through, install the washer/dust cover with the spline pattern in the center and then bolt on the non-drive arm and tighten it.

If the spindle is longer than 117mm, you probably have the "wide axle" version and you need one 2.5mm spacer between each bottom bracket cup and the shell.

Is this a crankset that you purchased separate from the frame? If it is and the bottom bracket came with it, you should have everything you need to install it in your frame.

BTW- the above linked instructions are for installing an MTB crankset. MTB cranksets are made with a longer spindle to fit in a 73mm bottom bracket. GXP bottom brackets only use the spacers when installing an MTB length spindle into a 68mm bottom bracket. For a road crankset, no spacers are used.
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